Verizon Wireless, which sells the product in the US, said the limited edition Motorola DROID (2) would feature a graphic design on the back depicting the Astromech Droid.

In addition to the phone, consumers will also receive a Star Wars-themed media dock, a wired stereo headset, and exclusive, pre-loaded content including R2-D2 notification sounds and ringtones, four live wallpapers, an R2-D2 clock widget and "The Best of R2-D2" video with the original music from the Cantina on the pirate city of Mos Eisley, which is visited by Han Solo in Star Wars Episode IV.

Verizon is also launching an exclusive Empire Strikes Back app for those with Android 2.1 and above.

For a one-off fee of about Â£1.50, fans will be able to preview and download ESB-related content such as live wallpapers, widgets, a trivia challenge, sound and photo galleries.

The phone is only available on a two-year contract and will cost about Â£150. However, it appears to only be available in the US at present. American buyers will have to pay around Â£220 up front but will then get a payment card charged with a refund of about Â£70.